Category: Security

cPanel has released new builds for all public update tiers. These updates provide targeted changes to address security concerns with the cPanel & WHM product. These builds are currently available to all customers via the standard update system.

cPanel has rated these updates as having CVSSv2 scores ranging from 2.1 to 10.0.

If your deployed cPanel & WHM servers are configured to automatically update when new releases are available, then no action is required. Your systems will update automatically. If you have disabled automatic updates, then we strongly encourage you to update your cPanel & WHM installations at your earliest convenience.

RELEASES

The following cPanel & WHM versions address all known vulnerabilities:

The cPanel security team identified the resolved security issues. There is no reason to believe that these vulnerabilities have been made known to the public. As such, cPanel will only release limited information about the vulnerabilities at this time.

Once sufficient time has passed, allowing cPanel & WHM systems to automatically update to the new versions, cPanel will release additional information about the nature of the security issues. This Targeted Security Release addresses 20 vulnerabilities in cPanel & WHM software versions 11.54, 11.52, 11.50, and 11.48.

Due to the severity of the issues addressed in this release, cPanel is extending the blackout period on additional information to a full week. Additional information is scheduled for release on January 25, 2016.

CloudFlare protects and accelerates any website online. Once your website is a part of the CloudFlare community, its web traffic is routed through our intelligent global network. We automatically optimize the delivery of your web pages so your visitors get the fastest page load times and best performance. We also block threats and limit abusive bots and crawlers from wasting your bandwidth and server resources. The result: CloudFlare-powered websites see a significant improvement in performance and a decrease in spam and other attacks.Vulnerability Description:

Due to a carefully timed symlink attack directed at the cloudflare_data.yaml file, it is possible for a malicious user to change the permissions on any root owned file to 600 which could lead to the OS being disabled.

Impact:

We have deemed this vulnerability to be rated as HIGH due to the fact that should the malicious user target certain system files, such as /etc/passwd, it could render the OS inoperable.Vulnerable Version:

This vulnerability was tested against CloudFlare (cPanel Plugin) v5.3.2 and is believed to exist in all prior versions.Fixed Version: